Dual chamber mixing syringe and method for use

Inactive Publication Date: 2005-08-11
MDC INVESTMENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] Another aspect of the invention provides a syringe having two fluid chambers containing two medicinal components and a seal separating the c

Problems solved by technology

Although such a system works well for mixtures that are highly soluble, they are ineffective for less soluble mixtur

Method used

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  • Dual chamber mixing syringe and method for use
  • Dual chamber mixing syringe and method for use
  • Dual chamber mixing syringe and method for use

Examples

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Example

[0036] Referring now to the figures generally, and to FIGS. 1-6 specifically, wherein like elements are numbered alike, a mixing syringe is designated generally 10. The syringe 10 is a dual chamber syringe that houses two components of a medicine and maintains the elements separately during storage. Prior to use, the elements are combined and mixed together within the syringe. Particularly, preferably the two components are mixed by repeatedly transferring the two components back and forth between two fluid chambers 24, 37 within the syringe 10. After the medicine is thoroughly mixed, the medicine is expelled from the syringe.

[0037] More specifically, the syringe 10 includes a hollow housing 20, a hollow outer plunger 30 disposed within the housing and an inner plunger 50 disposed within the outer plunger. A seal 25 on the end of the housing seals the housing closed. Preferably, a first medicinal component is stored within the housing 20 and a second component is stored within the ...

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Abstract

A mixing syringe and method for using the mixing syringe are provided. The mixing syringe comprises a housing having a first compartment for containing a first component, an outer plunger having a second compartment for containing a second component, and an inner plunger. Prior to use, a seal separates the first and second components. To prepare the mixture, the seal is pierced and the two components are mixed. The mixing syringe and its method of use are particularly suited to applications in which at least one of the mixture components is a relatively highly viscous material.

Description

PRIORITY CLAIM [0001] The present application claims priority to U.S. Provisional Application No. 60 / 514,045, filed on Oct. 24, 2003, which is hereby incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention relates devices for mixing two components to form a mixture. More specifically, the present invention relates to a syringe having two chambers for receiving two constituents that are to be mixed, and the method for using such a device. BACKGROUND OF THE INVENTION [0003] Many drugs are stored in separate components that are mixed before use. Typically, the separate components include a powder and a liquid diluent. By storing the components separately, shelf life of the drug is increased. [0004] With many of these drugs, the separate components are stored in a syringe and mixed within the syringe prior to use. The components are stored in separate chambers in the syringe prior to use. To prepare the medicine, the separate components are combined into a s...

Claims

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Application Information

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IPC IPC(8): A61MA61M5/31A61M5/315A61M5/32A61M37/00
CPCA61M5/3137A61M5/31596A61M5/3202A61M2039/229A61M2005/3106A61M2005/3128A61M2005/31598A61M2005/3104A61M5/347
Inventor HARPER, DEREK J.JOHNSON, CHARLES L.KOVALSKI, JOSEPH
Owner MDC INVESTMENT HLDG
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